static void Main(string[] args)
{
// 随机生成高度为 HEIGHT 的二叉树
var tree = new BinaryTree <int>();
var root = tree.InsertAsRoot(rand.Next(MIN, MAX));
CreateTree(tree, root, HEIGHT);
Console.WriteLine("先序遍历：");
tree.PreOrder(n =>
{
Console.Write(string.Format("{0} ", n));
});
Console.WriteLine();
Console.WriteLine("中序遍历：");
tree.InOrder(n =>
{
Console.Write(string.Format("{0} ", n));
});
Console.WriteLine();
Console.WriteLine("后序遍历：");
tree.PostOrder(n =>
{
Console.Write(string.Format("{0} ", n));
});
Console.WriteLine();
Console.WriteLine("层次遍历：");
tree.LevelOrder(n =>
{
Console.Write(string.Format("{0} ", n));
});
Console.WriteLine();
}
